<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>成绩查询</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <style>
        .form-inline .id-no-box{
            width: 300px;
            border-top-right-radius:0;
            border-bottom-right-radius:0;
            text-align: center;
        }
        .form-inline .btn-query{
            border-top-left-radius:0;
            border-bottom-left-radius:0
        }
    </style>
</head>
<body>
    <div class="container" style="margin-top: 20%;">
        <h2 class="text-center">成绩查询系统</h2>
        <form action="query.php" method="get" class="form-inline">
            <div class="form-group" style="margin:20px auto 0">
                <input type="text" name="student_no" class="form-control id-no-box"style="" placeholder="请输入学号">
                <button type="submit" class="btn btn-primary btn-query">查一下</button>
            </div>
        </form>
    </div>
</body>
</html>